In vitro methane production of eragrostis hay treated with graded levels of urea or nitrate

dc.contributor.authorAdejoro, Festus Adeyemi
dc.contributor.authorHassen, Abubeker
dc.contributor.emailabubeker.hassen@up.ac.zaen_ZA
dc.date.accessioned2019-10-25T12:53:39Z
dc.date.available2019-10-25T12:53:39Z
dc.date.issued2018
dc.description.abstractUrea treatment of protein deficient feeds serve as a source of ammonia nitrogen supply for rumen fermentation. This study was undertaken with the objective of determining the effect of treating Eragrostis curvula hay with varying levels of urea or nitrate on digestibility and in vitro fermentation. Grass hay was sprayed with urea solution at 0.5%, 1.0%, and 1.5% DM and calcium nitrate was used as a replacement of urea on an iso-nitrogenous basis. This was followed by 30 days anaerobic storage in airtight bottles with each treatment having three replicates. Following anaerobic treatment, hay samples were dried, milled and evaluated for their chemical composition, in vitro organic matter digestibility, and in vitro fermentation and methane production. Feed treatment with both urea and nitrate reduced ADF content of hay, while crude protein content was increased. In vitro organic matter digestibility of treated hays increased with inclusion levels although urea recorded higher values than nitrate. Nitrate treatment significantly reduced in vitro methane by 14-33% while there was no significant methane reduction in the urea treated diets. Total volatile fatty acid, ammonia N and pH across treatments were statistically not different (P>0.05). While urea treatment seems to improve digestibility better, it did not confer additional benefits when compared to nitrate treatment that provided the additional benefit of methane reduction with an acceptable level of improvement in feed digestion and fermentation. Nitrate can thus be incorporated into feed treatment to improve the nutritional value of poor quality hays.en_ZA
dc.description.departmentAnimal and Wildlife Sciencesen_ZA
dc.description.librarianam2019en_ZA
dc.description.sponsorshipThe European Community’s Framework Program (FP7/2007– 2013) through the ANIMAL CHANGE project (grant agreement no. 266018), the Department of Science and Technology and the National Research Foundation.en_ZA
dc.description.urihttp://www.thejaps.org.pken_ZA
dc.identifier.citationAdejoro, F.A. & Hassen, A. 2018, 'In vitro methane production of eragrostis hay treated with graded levels of urea or nitrate', Journal of Animal and Plant Sciences, vol. 28, no. 3, pp. 679-685.en_ZA
dc.identifier.issn1018-7081 (print)
dc.identifier.issn2309-8694 (online)
dc.identifier.urihttp://hdl.handle.net/2263/72014
dc.language.isoenen_ZA
dc.publisherPakistan Agricultural Scientist's Forumen_ZA
dc.rightsPakistan Agricultural Scientist's Forumen_ZA
dc.subjectAmmoniationen_ZA
dc.subjectDigestibilityen_ZA
dc.subjectEragrostis hayen_ZA
dc.subjectNitrateen_ZA
dc.subjectMethane emissionen_ZA
dc.titleIn vitro methane production of eragrostis hay treated with graded levels of urea or nitrateen_ZA
dc.typeArticleen_ZA

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